Rotary engine.



. S. S; WILLIAMS.

- ROTARY ENGINE.

APPLIOIATIOH FILED OUT. 19, 1912.

1,047,357. Patented Dec. 17, 1912.

v UNIT- SILAS WILLIAMS, 0F MINNEAPGLIEL MINNESOTA.

ROTARY ENGINE.

Specification of Letters Patent.

Patented Dec. 1%, "i912.

Application filed October 19, 1912. Serial No. 726,847.

To all whom it may concern:

Be it known that 1, Sims S. lVILLIAMS, a citizen of the United States,residing at Minneapolis, in the county of Hennepin and State ofMinnesota, have invented certain new and useful Improvements in RotaryEngines, of which the following isa specification, reference being hadto the accompartying drawings.

This invention relates to' rotary engines and more particularly topistons therefor, the-invention having for its primary object to providean improved mounting for packing strips carried by the piston, saidpacking strips engaging the wall of the engine cylinder.

' A further object of the invention is to provide a rotary pump oreuginehaving improved structuralfeatures whereby the operatingefiiciency, durability and reliability of the engine is materiallyenhanced.

With the above and other objects in view as will become apparent as thedescription proceeds, the invention consists in certain constructions,combinations and arrangements of the parts that I shall hereinafterfully describe and claim.

For a full understanding of the inven-[ tion, reference is to be had tothe following description and accompanying drawing, in whichv Figure 1is aside elevation, one of the face plates of the casing removedillustrating a rotary pump or engine embodyingthe present invention;Fig. 2 is a section taken on the line 2-2 of Fig. 1; Fig. 3 is a sectiontaken on the line 3-3 of Fig. 2; ant Fig. 4 is'a detail perspective viewof one or the packing strips.

Referring in detail to the drawing 5 designates the body of the enginecasing which is provided with two internal communicating chambers 6 eachof which is of substantially circular form. The ends of these chambersare closed by means of the face lates 8 which are bolted or otherwisesecured to the body of the casing as indicated at 9. The engine casingis centrally provided with inlet and outlet ports 10 and 11 respectivelywhich open into the casing at the communicating point of the chambers Gand at diametrically opposite sides thereof. Pipes are connected tothese ports and to a source of fluid supply, said pipes being providedwith suitable valves whereby the fluid may be admitted to the enginecasing from either side thereof and exhausted from the opposite side.

Que of the face plates 8 of the casing is provided with step bearings 12which receive the bearing studs 14 on one end of the pistons 13. Therods 15 of the pistons extend through openings in the other face plateof the engine casing. Each of-the pistons is provided witha series ofparallel peripheral grooves or channels 16 which are of substantiallysemi-circular form. In these grooves or channels, the cylinders 1'7 aresecured in any preferred manner. Each of these cylinders is providedwith a longi' tudinal groove or kerf 18, the base wall of which isprovided with recesses or sockets 19 to receive the coil springs 20.These springs bear against the packing strips 21 preferably of brass andforce the same out- Wardly so that their outer edges are disposed,

beyond the peripheries of the cylinders 17. The inner edges of thepacking strips 21 are cut away as at 23 and spaced from therbase wallsof the grooves 18 in the cylinders. Each of the packing strips isprovided in one side with a plurality of channelsQQ through which theactuating fluid may enter beneath said packing strips and assist thesprings 20 in forcing said packing strips outwardly into .engag' mentwith the casing walls. Thus a very tight frictional engagement of theouter edges of the packing strips with the walls of the circularchambers 6 of the engine easing will be maintained.

The engine operates in a similar mannor to rotary pumps or engines ofthis type which are well known in the art, the cylinden; and channels ofthe rotary pistons receiving the impact of the fluid as it is admittedto the engine casing, whereby said pistons are driven. The cylinders 17are arranged alternately with relation to the open grooves or channels16 of the pistons and as the pistons rotate in opposite directions, thecylinders of the channels of the other piston.

From the foregoing it is believed that the construction and manyadvantages whichtac one piston are received in tie d by the rotarypistons may be readily renewed when they become too far Worn for furthereffective service, the expense incident packing strips are arranged maybe employed if desired, It is also manifest that many other changes inthe form, proportion and arrangement of the several elements spirit ofthe invention.

Having thus described the invention, what is claimed is: v

1. The combination with an engine casing having substantially circularconnnuni eating chambers, of a rotary piston arranged in each of saidchambers, each of said pistons having a plurality of parallellongitudinal peripheral channels, cylinders arranged in alternatechannels of the pistons, and radially movable packing strips mounted ineach of the cylinders, the cylinders on one piston being adaptedforengagen ent in the channels of the other piston.

2. The combination with a casing having substantially circularcommunicating chambers and inlet and outlet ports communicating with thechambers, of a rotary piston mounted in each of said chambers, each ofsaid pistons being provided with a plurality of parallel longitudinalchannels, cylinders secured in alternate channels of the pistons, eachof said cylinders being provided with a longitudinal groove, a packingstrip arranged in said groove and provided in one face with channelsthrough which the actu ating fluid may enter beneath the packing stripsto force the same outwardly into engagement with the wall of the casing,the

cylinders on one piston being adapted for groove, a metal packing striparranged in said groove, COll springs disposed between the packing stripand the base of the groove to force said packing strip outwardly beyondthe periphery of the cylinder, said packing strip being provided in oneside with a plurality of channels through which the actuating fluid mayenter beneath said packing strip and assist the springs in forcing saidstrips outwardly, the cylinders of one piston being adapted to enter thechannels of the other piston.

In testimony whereof I hereunto aflix my signature in the presence oftwo witnesses. v

SILAS S. WILLIAMS.

Witnesses: v

ALBERT CAnLsoN, F. L, PALMER.

